Platypus Gravityworks Filter

This pump-free system is gravity fed and offers a high-flow capacity. Fill the unfiltered water reservoir, raise, and hang it. You can maintain the high flow rate in the field by backflushing the system, hold the clean water reservoir above the unfiltered reservoir. No disassembly required.

Note, these fibres are slightly more brittle than other filter materials, and somewhat more susceptible to damage from strong impact. Although the cartridge is encased in a protective rubber shell, and drop-tested to seven feet, consider carrying a spare cartridge on long trips – they are small, light, and relatively inexpensive. Do not allow the cartridge to freeze after initial use.

• Filters 4L of water in less than 2.5 minutes.
• Hollow fibre filter has a high surface-area that allows water to flow quickly through a 0.2 micron effective pore size.
• Removes 99.9999% of all bacteria and protozoa.
• 4L unfiltered water reservoir has a redesigned fabric handle that's lighter easier to manage when hanging. Quick-disconnect valve automatically cuts the flow of water when the hose is disconnected.
• 4L clean water reservoir has a simple hose connection at the bottom, and no top zipper, so it's less likely pop open while in use.
• Reservoirs are made of silver ion-treated polyethylene film that doesn't pick up tastes.
• Clip-style shut-off valve on output hose between reservoirs.
• Silicon tubing.